Hide-working machine.



PATBNTED DEG. 3,1907.

No. 872,489 I "A. E.-WHI TN E'Y. HIDE WORKING MACHINE. Arrn xiomgxon FILED ram-19. 190s.

lIYl IENTOR.

PER I WITNESSES.

HT TOR/YE).

T show that a-homogeneousfrnbber ooveringpf this thickness, 1 1/4 to 1 1/2 inches, if made Warren sra'rns {Parana @EFEQE ARTHUR tqwmmt, or .wINonEs TER, MASSACHUSETTS, Assrenbn' or ONE- ALF TO a rornnr r WHITNEY; or-WINoHEs En, MASSACHUSETTS.

;' HIDE-WORKING- MaoHm no. syaase.

To all whom tt mcy concern." 1 ,Be it known that I, ARTHUR E. WHITNEr,

1. 'certain'- newand useful Improvements in Hide-'Workin Machines, of which the follow- 1mg Eis aspec', 'cation.

' ,Myjinvention'relates to hide-w orking'ma' chines. and-more particularly to, the bed roll employed insuch machines to hold the hide' 'against the work roll. This bed roll comprises a; metal shaft covered with .an inner layerof soft, or porous, rubber and anouter a. priming of hard rubber btween'said' inner layerand said metal shaft.

perform its wor and a rubber coverin hard I enough for the required contact wit the j Y work roll and still of sufficient elasticity, or give, topermit lumps inthe hide to pass be tween the work .roll andthe bed roll without injury to the hide andat the same tim'e.to sec'ur'ea roll complete (shaft and covering) of a I -diameter small enough to secure the desired contact b'et'weenthe surfaces of the two rolls. 'Exppri'ence and experiment have shown thatt e metal shaft should be not less than approximately 3'. inches in, diameter while i 1 thc.-ri1 bber' covering should be approxiniately'"1-1/ 4 to 1121/2 inches thicknessf mal'ringthe entire roll 51 2 to 6 inches 'diameten- Experience an experimen also 'of rubber hard enough work roll, is not yiel ing enough to take care 40 versely, if yielding-enough. to take care of such lumpsjis not hardenou h for the contact mentioned. -'Fhe"difii'c tyhas given.

rise to experiments'whi'ch have not proved 4 5 successful. ,The. -di ame ter'of the shaft and the thickness of the'covering have been va-- ried, but all with unsatisfactory r'esults.,

' I have conceived-the idea ofsecuring a rollhaving the proper requirements, namely,

diameter, hardness of surface and elasticity; by providing a metalshaftapproximately 3 inches in 'diameterand a rubber coveringcomprising-an" outer portion of'hard yielding rubber and an inner portion of soft, or 5 5 spongy, rubber. The best results are ob .more operations. layer' of hard yielding rubb er,- preferablywith 'rubber, the inner portion-of the roll is made of thG-lUm PSQJ LII the ,passing hide and, con-T Patented Dec. 3, 1907. v

t ained by making this outer portion of hard yielding rubber of approximately 5/8 inches thickness and the innerportion of soft, or

s ong'y, rubber of approximately the same t 'ckness. This inner portion of soft, spongy rubber is a well ,known article made of ground rubber mixed with crystals of some leavening agent adapted to produce the desired porosity. The roll is made by placing a priming around themetal shaft, the g'round rubber around the priming and the'harglrubfl .ber around the ground rubber and vulcani-zing them in any way desired and by one or The primingis approximately 1/16 of an'inch in thickness, being 'preferabl just thick enough to hold the shaft an spongy rubber together. Preferablythe outer portion of the roll is composed of a'high grade quality of close grained I 7.5

of the same kind and; quality of rubber made spongy in any desired manner, and the.

priming is made of hard cheap rubber which sticks to the. shaft better than softer and purer rubber and to which thelsoft rubber adheres very firmly and. permanently. Thepriming may be omitted, but the results are not then so satisfactory. I v The invention isillustrated by the accompanying drawingsin which- I j Figure 1 is aplan viewof; the bed roll with a portion cut away. Fig. 2 is a section on the line 2+2, Fig. 1-.

A isthe metal shaft.

B is the priming v G is the inner porous covering.

respectively; all vulcanized together; sub

stantially as described. p In testimony whereof I have affixed my signatnre,.in presence of two witnesses.

-,ARTHUR E. WHITNEY. Witnesses: 7

RA'LPH W. FOSTER, v HELE1 I,1\I.DEARB0RN.

a D is the outer covering of hard rubber. for contact with the 

